Make sure we have a mutable copy of the category names when decoding an archived object.
Added a Launch Screen.xib and updated the deployment target to iOS 6.0 to all iOS example apps.
Removed some obsolete availability checks from the iOS example apps.
Fixed a text drawing issue on iOS 6. Fixed issue #125.
Updated project settings for Xcode 6.1.
Merge branch 'master' into release-2.0
Updated the iPhone CPTTestApp with Xcode 6.1 changes to Swift.
Updated the DatePlot example app with Xcode 6.1 changes to Swift.